Create Atm-simulator.java

Author: chaitanya5711

Atm-simulator.java

@@ -0,0 +1,158 @@
+package hello;
+import java.util.*;
+
+public class Atm {
+    private static class ATM {
+        private int balance = 5000;
+        private static int password = 1991;
+
+        public int getBalance() {
+            return balance;
+        }
+
+        public void deposit(int amount) {
+            if (amount > 0) {
+                balance += amount;
+                System.out.println("Deposit successful. Current balance: " + balance);
+            } else {
+                System.out.println("Invalid deposit amount");
+            }
+        }
+
+        public void withdraw(int amount) {
+            if (amount <= 0) {
+                System.out.println("Invalid withdrawal amount");
+            } else if (balance >= amount) {
+                balance -= amount;
+                int gst = amount * 2 / 100;
+                balance -= gst;
+                System.out.println("Withdrawal successful. GST (2%): " + gst);
+                System.out.println("Current balance: " + balance);
+            } else {
+                System.out.println("Insufficient balance");
+            }
+        }
+
+        public boolean verifyPassword(int input) {
+            return input == password;
+        }
+
+        public void changePassword(int newPassword) {
+            password = newPassword;
+            System.out.println("Password updated successfully");
+        }
+    }
+
+    public static void main(String[] args) {
+        ATM atm = new ATM();
+        Scanner sc = new Scanner(System.in);
+        boolean sessionActive = true;
+
+        System.out.println("Enter the User Name:");
+        String username = sc.nextLine();
+
+        if (!username.equals("chaitanya")) {
+            System.out.println("Invalid username");
+            return;
+        }
+
+        while (sessionActive) {
+            System.out.println("ENTER THE PASSWORD:");
+            int pin = sc.nextInt();
+
+            if (!atm.verifyPassword(pin)) {
+                System.out.println("Wrong password. Transaction cancelled.");
+                continue;
+            }
+
+            System.out.println("__WELCOME__");
+            System.out.println("\nWelcome to --------BANK OF INDIA-------:");
+            System.out.println("1. Check the balance");
+            System.out.println("2. Deposit the amount");
+            System.out.println("3. Withdraw the amount");
+            System.out.println("4. Send Money");
+            System.out.println("5. Change Password");
+            System.out.println("6. Exit");
+            System.out.println("___________________________________");
+            System.out.println("ENTER YOUR CHOICE:");
+
+            int choice = sc.nextInt();
+
+            switch (choice) {
+                case 1:
+                    System.out.println("Balance: " + atm.getBalance());
+                    break;
+
+                case 2:
+                    System.out.println("Enter the amount to deposit:");
+                    int depositAmount = sc.nextInt();
+                    atm.deposit(depositAmount);
+                    break;
+
+                case 3:
+                    System.out.println("Enter the amount to withdraw:");
+                    int withdrawAmount = sc.nextInt();
+                    atm.withdraw(withdrawAmount);
+                    break;
+
+                case 4:
+                    System.out.println("1. OM");
+                    System.out.println("2. SHAM");
+                    System.out.println("3. KARAN");
+                    System.out.println("4. RAMAN");
+                    System.out.println("ENTER THE RECIPIENT:");
+                    int recipient = sc.nextInt();
+                    
+                    System.out.println("Enter amount to transfer:");
+                    int transferAmount = sc.nextInt();
+                    
+                    if (transferAmount <= 0) {
+                        System.out.println("Invalid amount");
+                        break;
+                    }
+                    
+                    if (transferAmount > atm.getBalance()) {
+                        System.out.println("Insufficient balance");
+                        break;
+                    }
+                    
+                    int gst = transferAmount * 2 / 100;
+                    atm.withdraw(transferAmount + gst);
+                    System.out.println("Transfer successful to recipient " + recipient);
+                    System.out.println("GST (2%): " + gst);
+                    System.out.println("Current balance: " + atm.getBalance());
+                    break;
+
+                case 5:
+                    System.out.println("Enter current password:");
+                    int currentPin = sc.nextInt();
+                    
+                    if (!atm.verifyPassword(currentPin)) {
+                        System.out.println("Wrong password");
+                        break;
+                    }
+                    
+                    System.out.println("Enter new password:");
+                    int newPin = sc.nextInt();
+                    System.out.println("Confirm new password:");
+                    int confirmPin = sc.nextInt();
+                    
+                    if (newPin == confirmPin) {
+                        atm.changePassword(newPin);
+                    } else {
+                        System.out.println("Passwords don't match");
+                    }
+                    break;
+
+                case 6:
+                    sessionActive = false;
+                    System.out.println("Thank you for banking with us!");
+                    break;
+
+                default:
+                    System.out.println("Invalid choice");
+            }
+        }
+        sc.close();
+    }
+}